CN101155316A - Picture recorder and commercial message detection method - Google Patents
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- CN101155316A CN101155316A CNA2007101478171A CN200710147817A CN101155316A CN 101155316 A CN101155316 A CN 101155316A CN A2007101478171 A CNA2007101478171 A CN A2007101478171A CN 200710147817 A CN200710147817 A CN 200710147817A CN 101155316 A CN101155316 A CN 101155316A
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 45
- 230000014509 gene expression Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 abstract description 13
- 230000005236 sound signal Effects 0.000 abstract description 7
- 238000004904 shortening Methods 0.000 abstract 1
- AZFKQCNGMSSWDS-UHFFFAOYSA-N MCPA-thioethyl Chemical compound CCSC(=O)COC1=CC=C(Cl)C=C1C AZFKQCNGMSSWDS-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/37—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying segments of broadcast information, e.g. scenes or extracting programme ID
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/56—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
- H04H60/58—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 of audio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/782—Television signal recording using magnetic recording on tape
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/27—Arrangements for recording or accumulating broadcast information or broadcast-related information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/781—Television signal recording using magnetic recording on disks or drums
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
Abstract
The present invention relates to a picture recorder and a commercial message detection method for executing CM detection by simple method and CM detection treatment before the picture recording and shortening the waiting the time for user. The picture recorder that records TV broadcast programs and skips commercial sections included in broadcasts for reproduction, includes: a picture reproduce controlling part for recording the broadcast program in a storing part and reproducing the program; an audio input unit that separates an audio signal from the broadcast program; and an audio processing unit that detects a commercial section from an audio signal and generates the reproduction position. The audio processing unit includes: a silent section determining unit that compares the level of an audio signal included in the broadcast program with a threshold (V0), and determines a section less than V0 as a silent section; and a commercial section determining unit that, when the interval T between adjacent silent sections matches a predetermined time length Tc, determines a section sandwiched by the silent sections as a commercial section.
Description
Technical field
The present invention relates to when the TV broadcast program is recorded a video, detect interval recording apparatus and the commercial detection method of advertisement (commercial message/spot) that is comprised in the broadcasting.
Background technology
In recent years program recording device, with the TV broadcast program recording in storage mediums such as hard disk, reproduce when carrying out audiovisual at program video recording, the user can skip advertisements broadcasting (hereinafter to be referred as CM) part, more effectively audiovisual material main program part (main part) (skipping reproduction hereinafter to be referred as CM).
At this moment, need from broadcast program, distinguish CM and main program part, propose to have following method in the prior art: for example the technology of record is that the picture conversion portion that brightness degree changes is detected in patent documentation 1, if the time interval from this picture conversion portion to subsequently picture conversion portion is a predetermined distance, then be judged as the CM interval.In addition, the technology of record then is that the no signal that detects image and voice signal partly is blank screen (black frame) and no sound-screen (silent frame) in the patent documentation 2, if no signal partly be spaced apart predetermined distance, then be judged as the CM interval.
Patent documentation 2 Japan Patent Te Biaopingdi 8-507633 communiques
Summary of the invention
In above-mentioned patent documentation 1,2,, need to resolve signal of video signal in order to distinguish CM and main program part.Owing to need to have arithmetic processing circuit and jumbo memory at a high speed in image processing, so treatment circuit becomes complicated, causes recording apparatus to become the high price article easily.
What put down in writing in above-mentioned patent documentation 1 in addition is: earlier temporarily with after broadcast program recording is in VTR, carry out the reproduction of program again from VTR, extract by CM simultaneously and detect cm section with program, and detected part is set mark (flag).In above-mentioned patent documentation 2, generating CM positional information (reproducing figure (map)) also is just to carry out after program recording is finished at least.Certainly, in detecting, these CM need certain processing time.Handle and video recording action executed in parallel even CM detects, the processing in the interval before video recording is near completion also must just can be carried out after video recording is finished.Therefore the user is skipping CM during audiovisual material main program part, must waiting for that video recording finishes, and being used to by the time skip till the reproduction position data generation end of reproduction.
The present invention more positively carries out CM by more simple method and detects, and, before video recording is finished, carry out CM and detect processing, user's stand-by period is shortened.
Particularly, for example the TV broadcast program is being recorded a video, in the program recording device that reproduces between the advertisement area that is comprised in the skips broadcast, have: the picture recording and reproducing control part, carry out following control: in storage part, broadcast program is recorded a video, from this storage part, reproduce according to reproducing positional information; The sound input part separates voice signal from broadcast program; With the sound handling part, from by the sound importation from voice signal detect between advertisement area, generate the reproduction positional information of the position between the expression advertisement area.Wherein, acoustic processing portion has: the interval detection unit of tone-off, and to the level and the threshold value V of the voice signal that comprised in the broadcast program
0Compare, with not enough V
0The interval be judged to be the tone-off interval; And detection unit between advertisement area, under the interval T in the adjacent tone-off interval situation consistent, the interval that is clipped in this tone-off interval is judged to be between advertisement area with stipulated time length T c.
Wherein the interval detection unit of tone-off carries out following judgement: at the not enough threshold value W of the duration in tone-off interval W
0Situation under, this tone-off interval is not judged to be the tone-off interval.In addition, though the level of voice signal at threshold value V
0More than, at the not enough threshold value W of this interval duration W
1Situation under, also this interval is judged to be the tone-off interval.
Wherein detection unit carries out following judgement between advertisement area: the interval T s between starting point between the advertisement area ahead and the video recording starting point is stipulated time Ts
0Under interior situation, the starting point between advertisement area is ahead extended to the video recording starting point; Interval T e between end point between final advertisement area and video recording end point is stipulated time Te
0Under interior situation, the end point between final advertisement area is extended to the video recording end point.And the interval T e between end point between final advertisement area and video recording end point is stipulated time Te
0Under interior situation, judging that moment between final advertisement area ends its later purposes of commercial detection and handle, and generating the reproduction positional information of the position between the expression advertisement area.
In addition, particularly, when for example the TV broadcast program being recorded a video, detect in the commercial detection method between the advertisement area that is comprised in the broadcasting, to the level and the threshold value V of the voice signal that comprised in the broadcast program
0Compare, with not enough V
0The interval be judged to be the tone-off interval, under the interval T in the adjacent tone-off interval situation consistent, the interval that is clipped in the tone-off interval is judged to be between advertisement area with stipulated time length T c.
According to said method, a kind of CM that detects accurately in the broadcast program can be provided, it is skipped easy to use, at a low price the program recording device of reproduction.
Description of drawings
Fig. 1 is the frame construction drawing of an embodiment of the program recording device of expression present embodiment.
Fig. 2 is the schematic diagram of an example of the CM structure that comprised in the expression TV program.
Fig. 3 is the flow chart of an example of treatment step of the CM detection method of expression present embodiment.
Fig. 4 is the figure of the correcting process (S3032, S3033) in explanation tone-off interval.
Fig. 5 is the CM verification and measurement ratio of threshold value of relative tone-off duration of expression and the figure of CM accuracy.
Fig. 6 is the figure of explanation tone-off interval comparison process (S3041).
Fig. 7 is the interval figure that integrates (merge) processing (S3042) of the same CM of explanation.
Fig. 8 is the interval figure that handles (S3043) that prolongs of explanation CM.
Embodiment
Below, utilize accompanying drawing to describe embodiments of the present invention in detail.
Fig. 1 is the frame construction drawing of an example of the program recording device of expression present embodiment.Program recording device 1 receives TV broadcasting by antenna 101, selects the desired program channel by tuner 102.By picture recording and reproducing control part 103 with the program recording of selected channel in storage parts such as hard disk, CD 104.Can also skip the CM interval in addition reproduces the program of being recorded a video.In order to carry out picture recording and reproducing, still in Fig. 1, omit with various signal processing.
Sound input part 105 separates voice signal and digital conversion one by one from the broadcast program that receives, by interface 110, and sound import handling part 106.Information such as the sound sampling frequency when being transformed to digital signal, channel (channel) number also all are delivered to acoustic processing portion 106 from sound input part 105.Certainly, for these information, can be with the information providing set by acoustic processing portion 106 to sound input part 105.The CM interval is detected by the voice signal that receives by acoustic processing portion 106, and the generation expression is used to carry out the information (hereinafter referred to as reproducing positional information) that CM skips the CM position of reproduction.
Picture recording and reproducing control part 103 and sound handling part 106 comprise control command and the response that CM skips reproduction by interface 111 transmitting-receivings.When in each frame of the signal of video signal that will carry out picture recording and reproducing, begin to distribute in order under the situation of frame number ahead from image, by this frame number and retrieval command are sent to picture recording and reproducing control part 103 from acoustic processing portion 106, in the image of this frame number of retrieval, can make the image of this frame number skip reproduction.
In acoustic processing portion 106, the audio digital signal of importing is inputed in the memory 109 earlier temporarily, carry out dissection process such as CM detection again by CPU108.Its handling procedure is stored in the auxiliary storage portion 107 in advance, and CPU108 suitably reads it, is sent to memory 109 and handles.The content of handling procedure is the functional structure of aftermentioned Fig. 3.To be stored in the memory 109 by various data and the result of calculation that processing generates, carry out reference as required.In addition, various information such as audio digital signal, result also can be stored in the auxiliary storage portion 107.
Display unit such as PDP 116 show the output content of acoustic processing portion 106 by interface 114.Loud speaker 117 is exported by 113 pairs of voice signals that input to acoustic processing portion 106 of interface, and according to user's requirement the voice signal that is stored in the memory 109 is exported.Input unit 118 is made of numerical value input equipments such as indicating equipments such as mouse (pointing device) or keyboards, is undertaken for the order of acoustic processing portion 106 or the setting of threshold value by interface 112.
Like this in the program recording device of present embodiment, what be used for that CM detects is not signal of video signal and be to use voice signal.The acoustic processing portion 106 that is used to resolve is simple in structure, can realize with low cost.In addition, the structure of program recording device is not limited to the structure of Fig. 1, and image/audio output units such as tuner 102 portions such as broadcast reception such as grade, storage part 104, display unit 116 and loud speaker 117 both can be that the device internally-arranged type also can be an externally positioned type.
Next, the summary of the CM detection method of present embodiment is narrated.
Fig. 2 is the schematic diagram of the CM structure that comprised in the expression TV program.From program main program part 201 when CM203 changes, have the minimum interval of sound signal level 202 at both boundary.Similarly, from CM203 during to program main program part 205 conversion, there is the minimum interval of sound signal level 204 in both boundaries.Particularly in the received terrestrial digital broadcasting program, this sound signal level comprises the part 206 that level essence is zero (zero) in the minimum interval 202,204.Below, be that zero part 206 is called " zero one " with level essence, be that zero part 207 in addition is called " non-zero portion " with level, in addition that sound signal level is minimum interval is called " tone-off interval ".
In the broadcasting of reality, the length of CM203, the time interval between promptly adjacent tone-off interval 202 and the tone-off interval 204 is distinctive value, for example: adopt 15sec or its multiple (30sec, 45sec, 60sec).Therefore in the present embodiment, by detecting tone-off interval 202,204, whether the time interval T that investigates them is consistent with the distinctive interval of CM, thereby can detect the CM interval accurately.At this moment, owing to be mixed with zero one and non-zero portion in the tone-off interval, thus need correctly they to be discerned, to limit the tone-off interval.
Fig. 3 is the flow chart of an example of treatment step of the CM detection method of expression present embodiment.Wherein about the summary of treatment step, various processes is represented with S300～S305, and the waveform of dateout is represented with symbol 306～308 in each step.
In step S301, receive voice data from sound input part 105.The time series of the voice data that waveform 306 expressions receive.R represents that R channel, L represent the signal output of L channel.In step S302, for the voice signal of two sound channels about making is exported absolute value, respectively with summation again after the R sound channel, L sound channel square.And, value is quantified as 256 grades of 0～255 for the ease of calculating.That is waveform 307 expression (R,
2+ L
2) time series.
In step S303, with the quadratic sum of the voice signal of two sound channels and the sound level threshold value V that is predetermined
0Compare, judge the tone-off interval.Its contents processing is: in step S3031, with the sound level and the threshold value V of input
0Relatively, carry out binarization and handle, surpassing under the situation of threshold value, output " sound=1 is arranged ", under the situation of not enough threshold value, output " tone-off=0 ".But, the original situation that also comprises small tone-off interval between the range of sound that has that exists is arranged, in addition, also exist original tone-off interval to comprise small situation about having between the range of sound.Consider these influences among step S3032, the S3033, adopt the interval mode of revising of tone-off of carrying out in order more correctly to judge the CM interval, details is described in the back again.Waveform 308 is the binary data that sound, tone-off are arranged of these result gained, symbol 310 expression tone-off intervals.
In step S304, be benchmark with the time interval T in the tone-off interval 310 of waveform 308, judge that the CM interval is the CM end points.Its contents processing is: in step S3041, compare by time interval T and predefined CM time span with adjacent tone-off interval 310, judge whether folded having between the range of sound is cm section.At this moment, there is the interval continuous situation of a plurality of CM, in step S3042, integrates these intervals.In step S3043, under the situation or CM end point situation near video recording end point of CM starting point, make the CM interval extend to video recording starting point or video recording end point in addition near the video recording starting point.Particularly under the situation that extends to the video recording end point, can not wait until that video recording finishes just to end CM and detects processing.Be described again after a while about these processing.
In step S305, be benchmark with the above-mentioned CM end points of being judged (starting position and end position), the position of expression cm section, and generation is used to skip the reproduction positional information that only partly reproduce the program main program this position.This reproduction positional information is stored in the memory 109 of acoustic processing portion 106, skips when reproducing as CM the control signal of picture recording and reproducing control part 103 is used.
Below, use object lesson in more detail the described CM detection method of above-mentioned Fig. 3 to be described.At first, the determination processing in the tone-off interval of description of step S303.
In the binarization of step S3031 is handled, how to set the threshold value V of sound level
0Extremely important.Clearly in digital broadcast program, the tone-off interval of CM and main program portion boundary, its sound level essence vanishing.Therefore in the present embodiment, with threshold value V
0Value be set at 1 of quantization level, sound level is become zero part and is judged to be " tone-off=0 ", the part more than 1 then is judged to be " sound=1 is arranged ".
Among Fig. 4, (a) expression is handled the waveform in the tone-off interval of gained by the binarization of step S3031, (b) is the interval figure that revises of tone-off that explanation is carried out in step S3032, S3033.
Shown in (a), if only handle by binarization, even CM or main program part (be original have between the range of sound 401), also exist and non-integral for sound is arranged, but comprise the situation of zero portion 4010.Perhaps, even CM and main program portion boundary portion (being original tone-off interval 402), also exist be not overall level be zero, but the situation that has zero portion 4020 and non-zero portion 4021 to mix existence.Therefore, keep its former state and might cause misinterpretation when carrying out subsequently CM determination processing.
Therefore, carry out following processing shown in (b), removing is having between the range of sound the zero portion 4010 that comprised in 401 and is having between the range of sound 401 ' as continuous.In addition, remove the non-zero portion 4021 that in tone-off interval 402, is comprised, integrate 2 zero ones 4020, and as 1 continuous tone-off interval 402 '.
In step S3032 (processing is removed in small tone-off interval), remove (perhaps the ignoring it) in small tone-off interval (zero one) 4010 and handle as the tone-off interval.That is, set time width (threshold value) W that is used to take a decision as to whether the tone-off interval
0, the not enough threshold value W of duration W of tone-off interval if (zero one) 4010
0Then remove.The threshold value W that is used to judge the tone-off interval from result of experiment as can be known
0In tone-off duration particularly is under the situation of 500msec, can obtain good CM testing result.Below utilize Fig. 5 that its basis is described.
Fig. 5 is that expression is to the CM verification and measurement ratio of the threshold value of tone-off duration and the figure of CM accuracy.Here, CM verification and measurement ratio=[detected CM time of energy in the video program] ÷ [the essence CM time that is comprised in the video program].In addition, CM accuracy=[in the video program can detected CM time] ÷ [although can be detected in the video program CM time+be that the main program part is the time of CM by the flase drop survey].From this result as can be known: the threshold value W that is used for regarding as the tone-off interval
0Can be 180～500msec, be preferably 500msec.
In addition, in step S3033 (tone-off interval integration processing), remove the small integration processing that (non-zero portion) 4021 between the range of sound is arranged and carry out the tone-off interval (zero one 4020) of adjacency.Duration W and pre-set threshold W that (non-zero portion) 4021 between the range of sound here will be arranged
1Relatively, at duration W than threshold value W
1Removing this under the little situation has between the range of sound 4021, regards the tone-off interval 4020 of adjacency as same interval and integrates.At duration W at threshold value W
1Under the above situation, the tone-off interval 4020 of adjacency is judged to be respectively independently tone-off interval.This judges used threshold value W
1Be preferably 1sec.
So in the present embodiment, when the tone-off interval of judging voice signal,, make the precision of CM detection be improved by to the various correcting process of the interval enforcement of detected tone-off.
Then, judge that to the CM of step S304 is interval (end points judgement) processing describes.
At first in step S3041 (tone-off interval comparison process), the interval in tone-off interval is compared with CM time span Tc, take a decision as to whether the CM interval.
Fig. 6 is the figure of the processing of expression step S3041.In (a), to the tone-off interval 601,602 that in above-mentioned operation, determines ..., calculate the time interval T of the terminal point in adjacent tone-off interval
1, T
2...Judge each time interval T
1, T
2... whether consistent with the peculiar time span Tc of predefined CM.Here the peculiar time span Tc of CM is paid 30sec, 45sec, the 60sec of 15sec or its multiple.As long as any one of the time interval and Tc is consistent, record is carried out as CM candidate interval in the interval that is clipped in wherein.If inconsistent, the interval that then will be clipped in wherein is judged to be the main program partial section.Among Fig. 6, T
1, T
2, T
3All consistent with Tc, be to be clipped in wherein interval as the go forward side by side state of line item of CM candidate interval 611,612,613 in (b).
Step S3042 (the interval integration processing of same CM) is the processing that continuous a plurality of CM candidates interval is integrated.
Fig. 7 is the figure of the processing of expression step S3042.Wherein, under the situation of the position of the end point in CM candidate interval and the position consistency of the starting point in subsequently CM candidate interval, as the interval integration processing of implementing of same CM.That is, shown in (a), CM candidate interval 701,702,703 is recorded, and the end point in CM candidate interval 701 is consistent with the starting point in CM candidate interval 702.In this case, shown in (b), both are integrated, be transformed to a CM piece (being same CM interval) 711.And will integrate the CM candidate interval that forms like this and carry out recording processing as the CM interval.By such processing, even under the situation that a plurality of CM broadcast continuously, also can skip CM aptly and reproduce.
Step S3043 (the interval prolongation of CM handled) is the processing that the CM interval is extended to video recording starting point or video recording end point.
Fig. 8 is the figure of the processing of expression step S3043.Shown in (a), each CM piece (CM interval) is recorded, and CM piece ahead is 801, and final CM piece is 803.Secondly as (b) shown in, at the starting point t1 of CM piece 801 and the interval T s between the starting point t0 of recording a video near stipulated time Ts
0Under interior situation, the starting point of CM piece 801 is extended to video recording starting point t0 as CM piece 801 ' record.In addition, the interval T e between the end point t2 of CM piece 803 and video recording end point t3 is near stipulated time Te
0Under interior situation, the end point of CM piece 803 is extended to video recording end point t3 as CM piece 803 ' record.Particularly, the frame number that relatively utilizes of time span carries out, afore mentioned rules time (threshold value) Ts
0, Te
0Can be 60～300sec, be preferably set to 60sec.
In the broadcasting of reality, seldom in the moment that program begins, before beginning, inserts CM 60sec with interior main program part, and perhaps in the moment that program finishes, finish the back at CM and insert 60sec with interior main program part.Therefore, in the video recording zero hour or video recording finish time, even detect the main program part of utmost point short time, it be that effective main program possibility partly is very low, ignores that it is also no problem.Thus, can carry out the reproduction of skipping of CM more aptly.
In addition, if subscription and video recording, video recording starting point t0 and video recording end point t3 know in advance.Therefore, in the moment of the end point t2 that detects final CM piece 803, can directly calculate interval T e fixed and video recording end point t3, with threshold value Te
0Relatively.If comparative result Te＜Te
0, owing to can judge that the video recording after this partly is not effective main program part, do not detect and handle so do not need to carry out CM after this.End CM in the moment that detects end point t2 thus and detect processing, begin to carry out the reproduction positional information generation processing of step S305.Consequently, can before video recording finishes, generate and reproduce positional information, after video recording finishes, carry out CM at once and skip reproduction, therefore can shorten user's stand-by period.
According to present embodiment, detect owing to use voice signal to be used for CM, like this so the structure of device becomes simple.At this moment, detect the tone-off interval of voice signal, but, the precision of CM detection is improved by to the various correcting process of the interval enforcement of detected tone-off.In addition, owing to the reproduction positional information that generates before can finishing in the video recording of broadcast program about the CM position, so the user can adopt CM to skip reproduction mode audiovisual material main program part effectively after video recording finishes at once.
Claims (10)
1. recording apparatus is characterized in that having:
The picture recording and reproducing control part carries out following control: in storage part broadcast program is recorded a video, reproduce from this storage part according to reproducing positional information;
The sound input part separates voice signal from described broadcast program; With
Acoustic processing portion, from by described sound importation from voice signal detect between advertisement area, generate the described reproduction positional information of the position between the described advertisement area of expression,
Described acoustic processing portion has:
The interval detection unit of tone-off compares level and the 1st threshold value of the voice signal that comprised in the described broadcast program, and the interval of less than the 1st threshold value is judged to be the tone-off interval;
Detection unit between advertisement area under the situation consistent with stipulated time length of the interval in adjacent tone-off interval, is judged to be the interval that is clipped in this tone-off interval between advertisement area.
2. recording apparatus as claimed in claim 1 is characterized in that:
The interval detection unit of described tone-off is not judged to be the tone-off interval with this tone-off interval under the situation of duration less than the 2nd threshold value in described tone-off interval.
3. recording apparatus as claimed in claim 1 is characterized in that:
Even the level of described voice signal is more than described the 1st threshold value, under the situation of its interval duration less than the 2nd threshold value, the interval detection unit of described tone-off is judged to be the tone-off interval with this interval.
4. recording apparatus as claimed in claim 1 is characterized in that:
Detection unit between described advertisement area, the starting point between the advertisement area ahead is spaced apart the stipulated time with under the interior situation with the video recording starting point, and the starting point between advertisement area is ahead extended to the video recording starting point,
The end point between final advertisement area with the video recording end point be spaced apart the stipulated time with interior situation under, the end point between final advertisement area is extended to the video recording end point.
5. recording apparatus as claimed in claim 4 is characterized in that:
Detection unit between described advertisement area, the end point between final advertisement area with the video recording end point be spaced apart the stipulated time with interior situation under, judging that moment between final advertisement area ends its later purposes of commercial detection and handle, and generating the described reproduction positional information of the position between the expression advertisement area.
6. commercial detection method is characterized in that:
Level and the 1st threshold value to the voice signal that comprised in the broadcast program compare, and the interval of less than the 1st threshold value is judged to be the tone-off interval,
Under the situation consistent of the interval in adjacent tone-off interval, the interval that is clipped in this tone-off interval is judged to be between advertisement area with stipulated time length.
7. commercial detection method as claimed in claim 6 is characterized in that:
Under the situation of duration less than the 2nd threshold value in described tone-off interval, this tone-off interval is not judged to be the tone-off interval.
8. commercial detection method as claimed in claim 6 is characterized in that:
Even the level of described voice signal is more than described the 1st threshold value, under the situation of its interval duration less than the 2nd threshold value, this interval is judged to be the tone-off interval.
9. commercial detection method as claimed in claim 6 is characterized in that:
Starting point between the advertisement area ahead is spaced apart the stipulated time with under the interior situation with the video recording starting point, and the starting point between advertisement area is ahead extended to the video recording starting point,
The end point between final advertisement area with the video recording end point be spaced apart the stipulated time with interior situation under, the end point between final advertisement area is extended to the video recording end point.
10. commercial detection method as claimed in claim 9 is characterized in that:
The end point between final advertisement area and video recording end point be spaced apart the stipulated time with interior situation under, judging that moment between final advertisement area ends its later purposes of commercial detection and handle, and generating the reproduction positional information of the position between the expression advertisement area.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-260598 | 2006-09-26 | ||
| JP2006260598A JP4611952B2 (en) | 2006-09-26 | 2006-09-26 | Program recording apparatus and commercial detection method |
| JP2006260598 | 2006-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101155316A true CN101155316A (en) | 2008-04-02 |
| CN101155316B CN101155316B (en) | 2012-10-24 |
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| CN2007101478171A Active CN101155316B (en) | 2006-09-26 | 2007-08-30 | Commercial message detection method |
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| US (1) | US8306397B2 (en) |
| EP (1) | EP1906661A3 (en) |
| JP (1) | JP4611952B2 (en) |
| CN (1) | CN101155316B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101312513B (en) * | 2008-07-10 | 2012-07-04 | 明泰科技股份有限公司 | Audio and video program processing system and method |
| CN104967894A (en) * | 2014-09-04 | 2015-10-07 | 腾讯科技（深圳）有限公司 | Data processing method for video playing, client and server |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4611952B2 (en) * | 2006-09-26 | 2011-01-12 | 株式会社日立製作所 | Program recording apparatus and commercial detection method |
| US20100153995A1 (en) * | 2008-12-12 | 2010-06-17 | At&T Intellectual Property I, L.P. | Resuming a selected viewing channel |
| US20100319015A1 (en) * | 2009-06-15 | 2010-12-16 | Richard Anthony Remington | Method and system for removing advertising content from television or radio content |
| JP5506507B2 (en) * | 2010-03-31 | 2014-05-28 | Ｎｅｃパーソナルコンピュータ株式会社 | CM detection system, server, CM detection method, program, and recording medium |
| US9172960B1 (en) * | 2010-09-23 | 2015-10-27 | Qualcomm Technologies, Inc. | Quantization based on statistics and threshold of luminanceand chrominance |
| CN103237233B (en) * | 2013-03-28 | 2017-01-25 | 深圳Tcl新技术有限公司 | Rapid detection method and system for television commercials |
| CN106205656B (en) * | 2015-05-08 | 2020-02-21 | 阿里巴巴集团控股有限公司 | Method and device for positioning file playing position |
| CN105007533A (en) * | 2015-07-28 | 2015-10-28 | 米科互动教育科技（北京）有限公司 | Live course playback method, device and system |
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| JP2565209B2 (en) | 1987-12-28 | 1996-12-18 | ソニー株式会社 | Television signal processing device |
| US5696866A (en) * | 1993-01-08 | 1997-12-09 | Srt, Inc. | Method and apparatus for eliminating television commercial messages |
| EP0693215B1 (en) | 1993-01-08 | 1998-11-25 | Arthur D. Little Enterprises, Inc. | Method and apparatus for eliminating television commercial messages |
| DE69637514D1 (en) * | 1995-03-30 | 2008-06-19 | Thomson Licensing | Method and arrangement for classifying video signals |
| JP3098170B2 (en) * | 1995-05-16 | 2000-10-16 | 株式会社日立製作所 | Recording / reproducing apparatus, recording / reproducing method, and commercial discriminating apparatus |
| WO1999056280A1 (en) * | 1998-04-27 | 1999-11-04 | Hitachi, Ltd. | Recorder/reproducer |
| JP4026100B2 (en) | 1998-11-30 | 2007-12-26 | ソニー株式会社 | Information processing apparatus and method, and recording medium |
| JP2000165798A (en) | 1998-11-30 | 2000-06-16 | Sony Corp | Information processor and image processing method and providing medium |
| JP2000165806A (en) | 1998-11-30 | 2000-06-16 | Sony Corp | Information processing unit, its method and providing medium |
| JP4178629B2 (en) | 1998-11-30 | 2008-11-12 | ソニー株式会社 | Information processing apparatus and method, and recording medium |
| JP2000168506A (en) | 1998-12-04 | 2000-06-20 | Ngk Spark Plug Co Ltd | Adapter for replacement of wiper blade |
| JP3513424B2 (en) * | 1999-05-10 | 2004-03-31 | 日本電信電話株式会社 | Commercial part recognition method and its program recording medium |
| JP3659086B2 (en) * | 1999-10-06 | 2005-06-15 | 株式会社日立製作所 | Recording / reproducing apparatus and reproducing method |
| US6993245B1 (en) * | 1999-11-18 | 2006-01-31 | Vulcan Patents Llc | Iterative, maximally probable, batch-mode commercial detection for audiovisual content |
| JP4300697B2 (en) * | 2000-04-24 | 2009-07-22 | ソニー株式会社 | Signal processing apparatus and method |
| JP4296693B2 (en) | 2000-07-13 | 2009-07-15 | ソニー株式会社 | AV signal recording / reproducing apparatus, CM detection method, and recording medium |
| JP2002247516A (en) * | 2001-02-20 | 2002-08-30 | Sharp Corp | Recording device, reproducing device, and recording and reproducing device |
| JP2004336507A (en) * | 2003-05-09 | 2004-11-25 | Sony Corp | Method and device for image processing, recording medium, and program |
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| JP4373962B2 (en) * | 2005-05-17 | 2009-11-25 | 株式会社東芝 | Separation information setting method and apparatus for video signal determined from audio and video signal |
| JP4611952B2 (en) * | 2006-09-26 | 2011-01-12 | 株式会社日立製作所 | Program recording apparatus and commercial detection method |
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- 2007-08-10 US US11/836,943 patent/US8306397B2/en active Active
- 2007-08-30 CN CN2007101478171A patent/CN101155316B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101312513B (en) * | 2008-07-10 | 2012-07-04 | 明泰科技股份有限公司 | Audio and video program processing system and method |
| CN104967894A (en) * | 2014-09-04 | 2015-10-07 | 腾讯科技（深圳）有限公司 | Data processing method for video playing, client and server |
Also Published As
| Publication number | Publication date |
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| JP2008084381A (en) | 2008-04-10 |
| US20080075427A1 (en) | 2008-03-27 |
| US8306397B2 (en) | 2012-11-06 |
| CN101155316B (en) | 2012-10-24 |
| EP1906661A2 (en) | 2008-04-02 |
| JP4611952B2 (en) | 2011-01-12 |
| EP1906661A3 (en) | 2010-05-05 |
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